1.5 - multiples and least common multiple

What is the least common multiple of 2 and 5?

10

List the first 5 multiples of 3.

3, 6, 9, 12, 15

Find the LCM of 10 and 11.

110

Find the LCM of 4 and 6.

12

List the first 5 multiples of 12.

12, 24, 36, 48, 60

Find the LCM of 18 and 36.

18

Bob and Julia have the same number of flowers. Bob sorts his flowers in bouquets of 3, with no flowers left over. Julie sorts her flowers in bouquets of 7, with no flowers left over. What is the least possible number of flowers that each of them has?

21 bouquets

Betty and Jane have the same number of coins. Betty sorts her coins in groups of 6, with no coins left over. Jane sorts her coins in groups of 8, with no coins left over. What is the least possible number of coins that each of them has?

24 coins

Find the LCM of 5 and 7.

35

What are the multiples of 4?

4 x 1 = 4 4 x 2 = 8 4 x 3 = 12 4 x 4 = 16 4, 8, 12, 16,...

Find the LCM of 12 and 15

60

Find the LCM of 9 and 11.

99

Susie signs up to volunteer at the animal shelter every 6 days. Luisa signs up to volunteer at the shelter every 5 days. If they both sign up to volunteer the same day, when is the first day that Susie and Luisa will work together?

On day 30.

Kirk goes to the gym every 3 days. Deshawn goes to the gym every 4 days. If they join the gym on the same day, when is the first day that they'll be at the gym together?

on day 12